Shuttle construction



April 2, 1929. w. 1.. HALL SHUTTLE CONSERUCTION Filed Dec. 15, 1926 ATTORNEYS.

Patented Apr. 2, 1929.

TES

UNITED STA PATENT OFFICE.

WASHINGTON L. HALL, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO JAMES H. BILLINGTON COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

smr'nrmsi CONSTRIYICTION.

Application filed December 15,1926. Serialno, 154,807.

This invention, stated in general terms, has reference to a shuttle construction and specifically relates to a new and useful yarn or thread tensioning device for loom shuttles and it further relates to a thread oryarn tensioning device which may be threaded easily and which will maintain a uniform tension upon the thread and which will moreover prevent an entangling of the thread or y One object of the present invention is to combine with a structure as just above stated, a metallic member having a vertical reinforcement against. which the weakened wooden wall of the shuttle may abut and be clamped thereto, so that in shuttle movement shock and attrition may be reduced to a minimum. V

A further object of the present invention resides in the provision of general details of construction and in the arrangement and combination of parts for attaining the results sought by the said leading object.

A further object resides in the provision of a tensioning device, adapted to be inserted and embedded in the throat end or discharge end of a shuttle, as a body member and a hinged tension member, the latter being pressed against the body with a uniform ten sion, as for example by a helical compression spring.

With these and other objects in view, the invention consists of the novel construction hereinafter described and finally claimed.

The nature, characteristic features and scope of the invention will be more fully understood from the following description taken in connection with the accompanying drawings forming part hereof, and in which:

Figure 1, represents a top or plan ,VIBW, shown partly in section, on line 11 of Fig. 2, illustrating a shuttle having mounted therein a device embodying the invention.

Figure 2, represents a side elevation of the same.

Figure 3, represents a section on line 3-3 of Fig. 2.

Figure 4, represents a bottom plan view of the device embodying the novel construction.

Figure 5, represents a side elevation of the same.

Figure6, represents a side elevation of the hinged friction or tensioning member shown detached.

'Fig. 7, is a view in detail hereinafter re 7 the various instrumentalities of which myinvention consists can be variously arranged and organized and that my invention is not limited to the precise arrangement and organization of the instrumentalities as herein shown and described.

In the accompanying drawings, in which like reference characters indicate like parts, the shuttle body 1 is tion and having therein the longitudinal bobbin chamber 2 terminating in the shuttle throat 3. The tensioning device 4 of my novel invention, shown particularly in Figs. 4 and 5, is seated cylindrical chamber 5, in the solid end portion 6 of the shuttle, slightly in advance of the bobbin chamber 2, as will be seen from Figs. 1 and 2. i

The tensioning device4 of my novel construction comprises a substantially cylindrical or disk-like base part 7, having a substantially plane lower surface 8, provided with a hinged tension or friction member 10. This part 7 is provided with the two opposed hinged sockets or recesses 11 and 12, for the reception of the respective hinged pins or pivot trunnions 13 and 14 of the hinged friction member 10. The hinged friction member 10, is provided with a transversely extending, friction nose 15, which is adapted to bear against the yarn or thread.

The tensioning device 4 also includes an upper truncated cylindrical friction member 16, formed integrallywith the base 7' and having a transversely extending, lower and inclined friction surface 17, against which the movable friction jaw or nose 15 of the movable tension friction member 10 is adapted to bear, and to have come therebetween the thread or yarn. The peripheral contour of both the upper member 16 and the lower base portion 7 which are of metal are generally cylindrical so as to fit snugly within purpose of illustrating my invenof the usual construc-' or housed within a vertical shuttle. A lower, pendant, guiding projection 21, may be provided upon the underside of the movable or hinged friction member 10, in order to guide and retain in position the upper end, of the hel cal compress on spring 18; By thus inserting the helical.

compressionspring18, into the bore or chamber 19 and securing the outer end thereohby thedetachable' screwthreaded, plug 20, the movable or hinged friction member, 10 is urged, upwardly against; the. inclined transverse friction, surface, 17 at the: stationary.

portionof saidtensioning device. a v

"Inorder to secure the tensioning-devicein position within the chamber. 5, a vertical screw 22, or, otheri'astening device, may be employed extending througha suitable opening, 23, inthe basaliportionof the tensioning device -7 and: threaded into the body of the shuttle as shown in Fig. 3. v A further fastening, device 24,1nay also be employed, in the form ot. a .machinesc 'ew, extending through the ,weakened wood wallof'the shuttle, from without, and threaded into the upper portion 16 of the metal tensioningv device, which .lat-

ter is extended ,w.ell;up. t0ward the top surface a of the shuttle,

' In; de jP$ -il he h ing f h shuttle, a vertically disposed slot 25' arranged uponanarcof aicircle is provided in the fore: part of the shuttle, startingfrom thecenter I of the chamber 5 and terminatingat the forepart ofthe shuttle on the side andextending downgto. the horizontal; slot 26,,see Fig 2,

which slots materially weaken, the shuttle wall. The slot26 inturnextends to and term nates in a horizontal, transverse eye bore 27, which extends inward from the outer side of-the shuttle, to the Vertical chamber 5,

Thus, thread,28, after passing through the shuttlethroat, is drawn down into the verticalslot 25 and intojthelhori-zontal slot 26. until itis finally dra-wn-intothe eye bore 27;

A horizontal slot 29, see-Fig. 5, isprovided in the stationary or body portionhof' the tensioning. device, intermediate of the. cylindricaLbase? andlthe upperportion16 and substantiallyin alignment with'the horizontal slot 26 in the bodyofthe shuttle, saidslot 26: extending to approximately the middle of said tensioning device. ;Thus, thread28 after being first drawngintothe. horizontal slot 26' in the body of the shuttle is thendrawn into the horizontal.slo t291 in vthe tensioning device and thus finally ,drawninto the inclined friction surface .17, and the movable friction nose I 15 of the .tensioning device.

In order to reduce the friction upon the thread as it leaves the eye bore or aperture of theshuttle, a pair of opposed metallic, anti- :triction members 30 and 31, are provided at the discharge end of said bore. Each of said members 30 and 31. comprises asmooth, cylindrical, metallic rod or pin embedded in the body of the shuttle and positioned tangent to the bore 27directly in advance oi'and behind said bore respectively. Thus, as the shuttle moves ineithel; direction, the yarn 28 will be drawn against one ofthese, antifriction pin or eye members-3O ,and 3l. While the pin 31 extends well below the .eye bore 27, the pin 30 is bevelled at its lower end and terminates at a place substantially in alignment with the lower edge ofthe horizontal'bridge 32. By this means the threadmay be drawn through the =slot;26 ;up0n,the lower end of the pinfit). In order tojprevent theunthreading of the shuttle by the entrance of the threadinto the slot 26, a Wire or other metallic bridge is provided extending transverselyiacross the eye bore of. the shuttle. and slightly exterior with respect toor in front of the pins. 30 and 31. The bridge 82 may be secured by two terminal prongs '38, embedded inthe body of. the shuttle. The upper edge of the bridge 32 is. slightly above the lowerterminal ofthe pin 30 so as to retain the thread passing through the eyeof the shuttle at a levelslightly above the lower terminal of said pin 30 and therebyprevents the unthreading or. the same.

- The device as above described, particularly the parts 16-and 24, serve toprovide'a relatively rigid and fixed connection between the weakened and non-weakened parts of the shuttle. fore-endas provided by the slitted portions. 2526. Thus, in the reciprocal movementof the shuttle, shock and attrition, as. would ordinarily result in splitting or splinteringofthe weakened shuttle part is reduced to a minimum by reason of said parts 1624l, in which connection it is to be noted that the part 16 extends well'up toward the top ofiaperture-f), Fig. 7 is similar in all respects to Fi 5 except-that; the position of the part 15 is in tilted or tension position in contradistinction .to horizontal position as shown inFig 5., V

' l/Vhat I claim is:

1. In a-shuttleconstruction, in combination, a weakened shuttle throat having avertical, cylindricalchamber, a tensioning device fitted to said chamber, said device having means including a vertical, rigid extension for abutting against the weakened wall of saidshuttle, and' means as a screw "for securing said extension to said weakened wall.

2. Ina shuttle. construction, incombination, a weakened shuttle. throat having a vertical, cylindrical chamber, a tensioning device fitted'to said chamber, said device having means including a vertical, rigid extension for abutting against the weakened wall of said shuttle, means as a screw for securing said extension to said weakened wall, and a pivotal tensioning device operatively connected with said extension.

3. In a shuttle construction, in combination, a weakened shuttle throat having a vertical, cylindrical chamber, a tensioning device fitted lo said chamber said device having means including a vertical, rigid extension for abutting against the weakened wall of said shuttle, means including a bolt for securing said extension to said weakened wall, a pivotal tensioning device operatively con nected with said extension, and means for adjusting the pivotal tensioning relation of said device.

signed my name.

WASHINGTON L. HALL. 

